Shock absorbing connecter



Aug' 23, 1932- J. P. RATIGAN 1,873,325

SHOCK ABSORBING CONNECTER Filed Sept, 23, 1929 Patented Aug. 23, 1932 Unirev STATES.

JAMEs r. BATIGAN, or' Los ANGELES, CALIFORNIA Per' SHOCK ABSORBING CONNECTER application sied septemberea, 1929. serial no. 394,468. 3 i

This invention relates to shock absorbing connecters and, more especially, to the type Another obj ect is to provide a construction diameter of the which will minimize the springs. i

Another object is to make provision for swivelling between the arbor, that connects the two hook members, and said hook members. Y Y

Another object is to mak-e provision for 15 opposed resilient members operating in 0pposite directions to absorb shocks.

Another object is to provide a construction which will enable the resilient members to absorb shocks by working in both directions. Other object-s and advantages will appear in the subjoined detailed description.

The accompanying drawing illustrates the invention.

Figure 1 is a side view of a shock absorb- '25 ing connecter constructed in Vaccordance with the provisions of this invention, the parts being sho-wn in the expanded condition as results when a load is imposed on the connecter. A block and tackle, a rod elevator 30 and a. fragment of a sucker rod, are indicated in broken lines.

Figure 2 is an enlarged view of the shock absorbing connecter shown in Figure 1, with the parts in their contracted condition, as occurs when there is no load imposed on the connecter.

Figure 3 is an enlarged edge view of Figure 2 from the left thereof.

Figure tis an enlarged vertical section Ton the line indicated by 4-11 Figure 2.

There is provided an arbor 5 which, in this instance, is of circular cross section. The arbor 5 is provided at its opposite ends with shoulders 6 which, in this instance, are formed by the inner faces of nuts 7 Awhich are threaded at 8 upon the arbor. The nuts 7 may be further secured against becoming detached from the arbor by pins 9 which extend through holes 10 in the nuts and holes 11 in the arbor. i

A pair of sliding abutments 12 is provided,

1T Erice i. p

each of said abutments having a circular'bore?.V

13 through which vthe arbor extends. Re-v silient shock absorbing members 14 are inter` posed between the shoulders` 6 and theV abut-` ments 12. Preferably, the-shockabso'rbing members 14ers in the form lof relatively It will be seen that'if but one spring were Vemployed it would be necessary'to construct it of'larger diameter heavy coil springs.

and of much heavier material to absorb equally well the same load imposed on the two springs. l

The abutments 12, in this instance,- are in the form` of cross members and-su1tablecon-'- nection means are provided for eachV of the cross members. These connection means, in' each instance, are of likeconstruction and,-

accordingly, only one of them need` be de-f` scribed in detail as follows:

The cross member 12 has bifurcated'or'- forked ends 15, 16. Extending intou the fork 15-and pivotally secured thereto by a pin 17 is a link 18.` The link 18 has a bifurcated or forked end 19' which receives one end of a" hook shapedxniember 20 which is pivotally secured to the fork19 by a pin 21. Y

The hook shaped member 20 has a shorter i leg 22 and a longer leg. 23, said legs being di-v` vergent. 1t is the leg 22; that is secured to the fork 19. rlhe hook shaped member 2O may be cf circular cross section excepting at its ends, which are preferably fiat for the reception, at one end, of the pin 21v and, at thev other end, of a loose pin 24 which' detachably,

connects the hook shaped member 20to the cross member. .The lpin 2-1 may itself kbe locked against accidentaldisplacement by a cotter pin 25 or .its equivalent. 1

Since it is desirable that the connecter act` friction type and, in this .instance,.ea`ch bear-iV ing comprises opposed race members 27, 28-

with rollers 2,9 therebetween, and an outer case 30 which enclosesl the edge of the race mem' bers 27, 28.

The invention operates as follows Assumf Ving, for example, that the connecter is to be used between a block and tackle, indicated at A in Figure 1, and an elevator, indicated at `B, the pins 24 will be removed and thel hook shaped members r2O swung on the pivots 21 kinto open position and the link C of the block and tackle will theny be slipped over one of said members 2O and said memberrwill then be swung vclosed'and its associated pin 24 placed in position to lock the member to the cross member 12. Alsol the bail D of thev Y elevator B will be slipped over the lower hook ingly, after the first shock is over the springs ltwill expand to some extent, thus completely absorbingthe shockro'f` picking up the load.

Relative swivelling of the members 12 is aforded 'and the swivelling may take place `at either or both of the bearings 2G, but it is to be Iunderstood that one of said bearings would tend to take place at the bearing that remains.

VI claim: V

1. A shockabsorbing connecter comprising an arbor provided with a shoulder at one end, a cross member slidably mounted on the arbor, a resilient member between the shoulder and the cross member, a link pivotally connected at one end to the crossmember, a hook-shaped member having legs of unequal lengths, a shorter leg pivotally connected to the link, and means pivotally connecting the longer leg to the other end of the cross member, 'one of the pivotalconnections being revleasableto permit of the hook-shaped' member being swung awa7 from the cross member, and the arbor extending between the link and V'the longer leg of the hook-shaped member.

2v. A shock-absorbing connecter comprising an arbor providedvwith a shoulder at oneend,

Y arcrossfmemberslidably mountedlon the arbor, a resilient member between the shoulder and the cross member, a link pivotally con- 'nectedationeend to the cross member, a hookshaped i'member having legs of unequal` lengths divergingtoward the cross member, the shorter leg pivotally connected Vto the link, andV means pivotally connecting the Y longerleg tothe other end of the cross member, .one of the pivotal connections vbeing re- Y leasable 'toi-permit of the hook-shaped member being swungaway from the cross membenandthe-arbor extending between the link and the longer leg of thehook-shaped mem-l nly connected at one end to one of the projecting ends of the cross member, a hook-shaped .member 'havinglegs of unequal lengths, the shorter leg pivotallyiconnected to the link,l

and a means pivotally Connecting thelonger yleg to the other projecting end of the vcross member,one ofthe vpivoted connections being Y releasable to permit of the hook-shaped member being swung away from the :cross member, and the arbor extending between kthe link and the longer leg of the hook-shaped inem# Signed at Los Angeles,'Cal'ifornia, this 11th day of September, 1929. 1 i VJ AMES P. RA'lIGAN Ycould be .omittedaso that all of the swivelling 

